WN1387
WN1387 (Southwest Airlines) is a multi-stop service on 34 routes, busiest Tucson to Denver. Of 582 departures recorded from October 2024 to July 2026, 79.9% left on time, according to the US BTS.
- On-time departures79.9%of 582 flights
- Average delay9.6 min
- July 202623▼ 34.3%vs July 2025
- Cancelled1.6%
- Legs flown under this number34
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 36 | 31 | ▼ 13.9% |
| February | 42 | 28 | ▼ 33.3% |
| March | 32 | 31 | ▼ 3.1% |
| April | 29 | 6 | ▼ 79.3% |
| May | 25 | 1 | ▼ 96.0% |
| June | 35 | 18 | ▼ 48.6% |
| July | 35 | 23 | ▼ 34.3% |
| August | 27 | – | – |
| September | 26 | – | – |
| October | 1 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 234 | 138 | ▼ 41.0% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 91.7% | 83.9% | ▼ 8.5% |
| February | 92.9% | 96.4% | ▲ 3.8% |
| March | 83.9% | 55.2% | ▼ 34.2% |
| April | 89.7% | 66.7% | ▼ 25.6% |
| May | 88.0% | 100.0% | ▲ 13.6% |
| June | 62.9% | 77.8% | ▲ 23.7% |
| July | 42.4% | 87.0% | ▲ 105.0% |
| August | 65.4% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 79.3% | – | – |
| December | 80.0% | – | – |
| Year-to-date average (Jan–Jul) | 78.8% | 81.0% | ▲ 2.8% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 1 | 2 | ▲ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 2 | 0 | ▼ 100.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 3 | 2 | ▼ 33.3% |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.5% 573
- Cancelled 1.5% 9
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| TUS DEN Tucson International Airport – Denver International Airport | 1,029 | 5.4 min | 84.7% | 86 |
| SJC AUS Mineta San Jose International Airport – Austin Bergstrom International Airport | 2,372 | 11.1 min | 78.0% | 60 |
| DAL SEA Dallas Love Field – Seattle–Tacoma International Airport | 2,685 | 28.7 min | 53.5% | 60 |
| KOA HNL Ellison Onizuka Kona International Airport at Keāhole – Daniel K. Inouye International Airport | 263 | -3.0 min | 94.8% | 58 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 92.9% | 0 |
| November 2024 | 34 | 33 | 75.8% | 1 |
| December 2024 | 48 | 47 | 83.0% | 1 |
| January 2025 | 36 | 36 | 91.7% | 0 |
| February 2025 | 42 | 42 | 92.9% | 0 |
| March 2025 | 32 | 31 | 83.9% | 1 |
| April 2025 | 29 | 29 | 89.7% | 0 |
| May 2025 | 25 | 25 | 88.0% | 0 |
| June 2025 | 35 | 35 | 62.9% | 0 |
| July 2025 | 35 | 33 | 42.4% | 2 |
| August 2025 | 27 | 26 | 65.4% | 1 |
| September 2025 | 26 | 26 | 100.0% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 29 | 29 | 79.3% | 0 |
| December 2025 | 31 | 30 | 80.0% | 1 |
| January 2026 | 31 | 31 | 83.9% | 0 |
| February 2026 | 28 | 28 | 96.4% | 0 |
| March 2026 | 31 | 29 | 55.2% | 2 |
| April 2026 | 6 | 6 | 66.7% | 0 |
| May 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 18 | 18 | 77.8% | 0 |
| July 2026 | 23 | 23 | 87.0% | 0 |